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1,2-Bis(di-4-sulfonatophenylphosphino)benzene+tetrasodium+salt+DM
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1,2-Bis(di-4-sulfonatophenylphosphino)benzene+tetrasodium+salt+DM
Catalog Number:
(100197-980)
Supplier:
Strem Chemicals Inc
Description:
Halides for CVD & ALD
Catalog Number:
(101930-408)
Supplier:
Matrix Scientific
Description:
MF=C7H6Cl2O2S MW=225.09 Cas=6291-02-7 MDL=MFCD04117295 500Mg
Supplier:
TCI America
Description:
CAS Number: 56-34-8
MDL Number: MFCD00011828 Molecular Formula: C8H20ClN Molecular Weight: 165.71 Purity/Analysis Method: >98.0% (T) Form: Crystal Color: White
Catalog Number:
(101812-196)
Supplier:
Matrix Scientific
Description:
Matrix Scientific Part Number: 021498-500MG , MDL Number: MFCD08457535
Supplier:
AMBEED, INC
Description:
4-(Trifluoromethoxy)phenylmethanesulfonyl chloride 95%
Catalog Number:
(102893-748)
Catalog Number:
(TS41301-0500)
Supplier:
THERMO FISHER SCIENTIFIC CHEMICALS
Description:
Lanthanum(III) chloride hydrate ACS
Supplier:
Adipogen
Description:
It is known that phenol and p-cresol are promoters of skin tumors and also urinary excretion of phenol and p-cresol is increased by exposure to benzene, which has hemopoietic toxicity, and toluene, respectively. Therefore, the determination of phenol and p-cresol is important in clinical chemistry and toxicology. Because phenol and p-cresol are present in urine as sulfate or glucuronide conjugates, they are hydrolyzed enzymatically or with acid, followed by distillation or extraction with organic solvent prior to measurement by GC or HPLC. However, these GC and HPLC methods require relatively large sample volumes (more than 1 ml) because of their insufficient sensitivities for measuring small amounts of phenol and p-cresol. In the general, the application of fluorescent labeling techniques to HPLC result in a sensitive and selective method. Some acyl chlorides are known to react with phenolic hydroxy group to form esters. It is known that 4-(N-phthalimidinyl)benzensulfonyl chloride Phisyl-Cl7, having sulfonyl chloride, reacted with phenol to give the corresponding highly fluorescent sulfonyl ester. The sensitivity of Physil-Cl was compared with Dansyl-Cl and DPS-Cl, which are analogous to Physil-Cl as fluorescent labeling reagents having sulfonyl chloride group. The labeling reaction of phenol with Dansyl-Cl and DPS-Cl were carried out according to the method of Ruiter et al.5 and the peaks were detected at the each fluorescence maxima wavelength (Ex350nm a Em550nm for Dansyl-Cl, and Ex320nm a Em386nm for DPS-Cl). Peak height of Phisyl derivative was higher about 85-and 7,3-fold than thosse of Dansyl derivative and DPS derivative, respectively. Among these three reagents, Phisyl-Cl was the most sensitive.
Catalog Number:
(TCN0048-25G)
Supplier:
TCI America
Description:
CAS Number: 2243-83-6
MDL Number: MFCD00004093 Molecular Formula: C11H7ClO Molecular Weight: 190.63 Purity/Analysis Method: >98.0% (GC,T) Form: Crystal Boiling point (°C): 306 Melting point (°C): 52 Flash Point (°C): 113
Catalog Number:
(76689-134)
Supplier:
AMBEED, INC
Description:
2,3,5,6-Tetramethylbenzenesulfonyl chloride 98%
Supplier:
Matrix Scientific
Description:
MF=C8H9CL2NO MW=206.07 CAS=39878-87-0 MDL=MFCD00039094 10G
Catalog Number:
(102842-396)
Supplier:
Matrix Scientific
Description:
5-Bromopyridine-3-sulfonyl chloride ≥95%
Supplier:
BeanTown Chemical
Description:
CAS: 3970-21-6; EC No: 223-589-8; MDL No: MFCD00000888
UN No: UN1992; Haz Class: 3 (6.1); Packing Group: III
Liquid; Linear Formula: CH3OCH2CH2OCH2Cl; MW: 124.57
Boiling Point: 50-52°/13 mmHg; Flash point: 54°C (129°F)
Density (g/mL): 1.091; Refractive Index: 1.427
Moisture Sensitive
Catalog Number:
(101922-276)
Supplier:
Matrix Scientific
Description:
Matrix Scientific Part Number: 061592-500MG , MDL Number: MFCD03421190
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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the
is still displayed and you need assistance, please call us at 1-800-932-5000.
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